Two things I swear by are ear plugs and a sleep mask. With these tools, I can freely go to bed whenever I want. It doesn't matter if it's still light out. It doesn't matter if my partner is still up and about. It won't disturb me if she gets up in the middle of the night. Yes, these things help not only my sleep but also my marriage.

Ear plugs and sleep masks are even more important if you're traveling.

My picks:

Mack's Ultra Soft Foam Earplugs, 50 pair for $8.81. I picked them based on 4.5 stars / 1,193 reviews on Amazon and was not disappointed. At that price, vastly cheaper than many options, you will feel free to swap them out anytime they get ear wax on them. Also works great for dampening noise at loud concerts.

Alaska Bear Natural Silk Sleep Mask for $9.99 on Prime. I picked them based on 4.5 stars / 5,011 reviews. It's the best of several sleep masks I've tested: easy to adjust, soft on the eyes, thick enough to block out light. Although I could imagine a better sleep mask—something lighter and less obtrusive and more secure—this gets the job done.